Adam: Hi guys. It's Adam at etrailer.com. Today we're going to be installing our PTC in-cabin air filter on our 2019 Subaru Outback. This is our new air filter. And what this is going to do, it's going to promote higher air flow and also clean your air as it enters into the cabin. Let me show you how to install this.Now we're going to prepare to take our old air filter off.… see more >